Wo-kyuu Kuubo is a recurring antagonist in the Kantai Collection (KanColle) franchise, representing the Abyssal Fleet's aircraft carrier class. As an enemy boss, she is known for her intimidating design, featuring a white mask and jet-black aircraft. Wo-kyuu Kuubo frequently appears as a formidable foe in various game maps and anime episodes, serving as a significant threat to the fleet girls. Her role emphasizes the ongoing conflict between the human fleet girls and the mysterious Abyssal Fleet.